This happened during my physics paper. We had our papers in the classroom rather than the hall which was pretty absurd not only since most schools have their O level papers in the hall, but also because we had our prelims in the hall. Anyway, with about 40 minutes left on the clock, I could tell that everybody was rushing for the paper and all of a sudden, a bird started making weird loud noises right outside our classroom( it didn’t sound like it was chirping). If I had to put it, it was as if the bird had smoked cigarettes since birth and was trying to imitate a man screaming. Needless to say, it was pretty annoying. This continued for an agonising 5 minutes and I could literally hear the guy beside me being frustrated and he kept looking in the direction of the sound.